Seeds and fresh plant gave glucoerucin (4-methylthiobutyi glucosinolate); leaves yielded iso-rhamnetin3-glucoside and iso-rhamnetin. The volatile oil of the seeds contains isothiocyanate derivatives. The oil at 0.004 and 0.008 mi/kg exhibits diuretic activity. The ethanolic extract of the seeds is diuretic at 20 and 40 mg/kg Seeds are used to induce vomiting in piace of ipecac.
Crude juice of the piant inhibited E. coli, S. typhi and B. subttis.
244 Ervataemia coronaria staff.
For eating purposes, the plant should be gathered before flowering; for medicinal use when in flower.
Ervataemia coronaria staff.
Synonym E. divaricata (L.) Aiston. Tabernaemontana coronaria R.Br.
Family Apocynaceae.
Habitat Throughout the sub- Himalayan tract from Garhwal eastwards to Assam and Bengal, extending southwards to North Circars.
English East Indian Rosebay.
Ayurvedic Nandivrksha, Tagar.
Siddha/Tamil Nandiyaavattam.
Action Topically anodyne; chewed for relief of toothache; administered as a vermicide. Various parts of the plant are used in the indigenous
system of medicine for skin diseases and cancer.
The plant from Sri Lanka and Pakistan contains several indole alkaloids, including voacristine.
Isovoacristic hydrochloride caused bradycardia in frogs and rabbits. The decoction of leaves exhibits antihypertensive and diuretic activity. Tabersonme, reported in the flowers, showed hypotensive effect on anaesthetized cats.
The most abundant alkaloids in stem cortex are tabernaemontanine, dregamine and 20-epi ervatamine.
Erycibe paniculata Roxb.
Habitat Throughout India, common in Uttar Pradesh.
Ayurvedic Ashoka-rohini (nonclassical).
Siddha/Tamil Unamkodi.
Action Bark—anticholerin. Ripe fruit eaten in constipation. Pounded root prescribed internally in fever. Bark is used in cholera.
EtOH (50%) extract of aerial parts exhibit diuretic and hypotensive activity.
Eryngium caeruleum Bieb.
Family Umbellferae; Apiaceae.
